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Strehl, P.

Paper Title Page
IT09 Diagnostics in Heavy Ion Machines 28
 
  • P. Strehl
    GSI, Gesellschaft für Schwerionenforschung, Darmstadt, Germany
 
  An overview of the measurements of most important beam parameters in heavy ion machines is given. The special characteristics of heavy ions concerning the great variety of parameters with respect to the type of accelerator (linac, circular machine), the species of accelerated ions as well as their energy, beam intensity, beam emittance and time structure are considered. The consequences for the design of beam diagnostic systems are discussed. Typical examples of measuring systems are given. Experimental results taken during the long operating time of the GSI facilities, covering a wide range of parameters, are reported.  
CT01 Measurements with a versatile Test Bench for Commissioning of the new GSI High Current Linac 45
 
  • P. Forck, P. Strehl
    GSI, Gesellschaft für Schwerionenforschung, Darmstadt, Germany
 
  For the commissioning of the new GSI prestripper a conventional slitdetector system and a single shot pepperpot system has been installed on a mobile test bench to measure intensity distributions in the two transverse phase spaces. To determine intensity distributions in the longitudinal phase space, including beam energy capacitive pickups and newly developed diamond counters have been installed on the test bench. The setup of the test bench provides also redundant information for beam current, beam profile and beam position. The most important features of all measuring systems including signal processing and data evaluation are reported. First results from the commissioning of the upgraded prestripper of the UNILAC at GSI are reported.  
PT07 Emittance measurements at the new UNILAC-pre-stripper using a pepper-pot with a PC-controlled CCD-camera 171
 
  • M. Dolinska, M. Domke, P. Forck, T. Hoffmann, D. Liakin, A. Peters, P. Strehl
    GSI, Gesellschaft für Schwerionenforschung, Darmstadt, Germany
 
  The complex mathematical algorithms and procedures to extract emittance data from intensity distributions measured with a single shot pepper-pot device are described. First results of mathematical evaluation from the commissioning of the new GSI pre-stripper linac structures are presented.  
PT12 Aspects of bunch shape measurements for low, intense ions beams 186
 
  • P. Forck, F. Heymach, U. Meyer, P. Moritz, P. Strehl
    GSI, Gesellschaft für Schwerionenforschung, Darmstadt, Germany
 
  For the characterisation of the ion beam delivered by the new High Current LINAC at GSI, the time structure of bunches and the knowledge concerning their intensity distribution in longitudinal phase space is of great importance. At least 100ps time resolution and the capability of measuring long tails in the distribution were design parameters. Taking advantage of Rutherford-scattering to reduce the count rate, a direct time of flight measurement technique using diamond detectors can be applied. First results are reported. Plans for determine the energy of individual ions by detecting secondary electrons emitted from a thin C foil using 1m drift are discussed.